Water Rocket Forum

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A water rocket is a type of model rocket using water as its reaction mass. The pressure vessel (the engine of the rocket) is constructed from thin plastic or other non metallic materials (usually a used plastic soft drink bottle) weighing 1,500 grams or less. The water is forced out by compressed air. It is an example of Newton's third law of motion.

In the class D rule set it states that 'Rocket must be completely scratch-built using materials which are not manufactured as model rocket parts' Does this encompass parachutes? As in do parachutes have to be constructed yourself? Or can they be purchased?